From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 927D0C38142 for ; Thu, 19 Jan 2023 03:48:33 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:Message-ID:Subject:Cc:To: From:Date:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References: List-Owner; bh=7qgy72nw8poCs20EYxLKr2josxRdLdO1JGsbjNhud5g=; b=viVAyEOQ82xja9 EJDNFXYfAxtp61moD8I68+niLUbg3UEi7SVseQVULculgq275XK5+xg+Wa210I9BP5Z41/P/+yaC7 au0s1il0eZ25K94PyG6PWAtibwMrSmUBJWZO8S2egXygIX3gum7fBSgtHuTnzCUB+0y/UcVghHqS0 N0//JLbJpSU35cZFAPxUCaocgxI4Lka7lSOGB8uD0odJfBQ1aeyJ/imPkiYh7CCFPqxCU8i0Dpr98 JYGtpJq1Os1ZBcUfAueaGLbVW4FJY6OWJbe+0d3JRG98HRDlyf/yIy/roiNFBZZuYMCOJjENMVN26 vXSEokZUI9E9kD18mFsg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1pILty-003Mw8-2O; Thu, 19 Jan 2023 03:47:46 +0000 Received: from fudo.makrotopia.org ([2a07:2ec0:3002::71]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1pILsA-003MA6-1v for linux-mtd@lists.infradead.org; Thu, 19 Jan 2023 03:45:55 +0000 Received: from local by fudo.makrotopia.org with esmtpsa (TLS1.3:TLS_AES_256_GCM_SHA384:256) (Exim 4.96) (envelope-from ) id 1pILs6-0004aJ-14; Thu, 19 Jan 2023 04:45:50 +0100 Date: Thu, 19 Jan 2023 03:45:43 +0000 From: Daniel Golle To: linux-mtd@lists.infradead.org, linux-kernel@vger.kernel.org, Miquel Raynal , Richard Weinberger , Vignesh Raghavendra Cc: Mason Yang , Jianhui Zhao Subject: [PATCH] mtd: spinand: macronix: use scratch buffer for DMA operation Message-ID: MIME-Version: 1.0 Content-Disposition: inline X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230118_194554_153205_448A4E8F X-CRM114-Status: GOOD ( 12.15 ) X-BeenThere: linux-mtd@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Linux MTD discussion mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-mtd" Errors-To: linux-mtd-bounces+linux-mtd=archiver.kernel.org@lists.infradead.org The mx35lf1ge4ab_get_eccsr() function uses an SPI DMA operation to read the eccsr, hence the buffer should not be on stack. Since commit 380583227c0c7f ("spi: spi-mem: Add extra sanity checks on the op param") the kernel emmits a warning and blocks such operations. Use the scratch buffer to get eccsr instead of trying to directly read into a stack-allocated variable. Signed-off-by: Daniel Golle --- drivers/mtd/nand/spi/macronix.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/mtd/nand/spi/macronix.c b/drivers/mtd/nand/spi/macronix.c index dce835132a1e2..722a9738ba370 100644 --- a/drivers/mtd/nand/spi/macronix.c +++ b/drivers/mtd/nand/spi/macronix.c @@ -83,9 +83,10 @@ static int mx35lf1ge4ab_ecc_get_status(struct spinand_device *spinand, * in order to avoid forcing the wear-leveling layer to move * data around if it's not necessary. */ - if (mx35lf1ge4ab_get_eccsr(spinand, &eccsr)) + if (mx35lf1ge4ab_get_eccsr(spinand, spinand->scratchbuf)) return nanddev_get_ecc_conf(nand)->strength; + eccsr = *spinand->scratchbuf; if (WARN_ON(eccsr > nanddev_get_ecc_conf(nand)->strength || !eccsr)) return nanddev_get_ecc_conf(nand)->strength; -- 2.39.1 ______________________________________________________ Linux MTD discussion mailing list http://lists.infradead.org/mailman/listinfo/linux-mtd/